Neutral Filter

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2-2-205

Alternative term: Neutral Density Filter, Neutral Grey Filter

A non-selective filter, usually of glass or plastic.


Note: Such filters produce no change (or very little change) in the colour of the transmitted light.




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM